Improvement in lawn-sprinklers



L. WOLPI & H. STEIN.

Lawn Sprnker.

No. 1211.876. Pafemed Feb. 4,1879.

NAPETERS. PHOTO-UTHOGRAPHER. WASHWGTON. D C,

vLUDWIG WOLFF AND HENRY STEIN,

OF CHICAGO, ILLINOIS, ASSIGNORS TO THE L. WOLFF MANUFACTURING COMPANY,OF SAME PLACE.

IMPROVEMENT IN LAWN-SPRINKLERS.

Specification forming part of Letters Patent No. 211,876, dated February4, 1879; application filed May 14, 1878.

To all whom it may concern.'

Be it known that we, LUDWIG WoLFF and HENRY STEIN, of Chica-go, Cookcounty, State of Illinois, have invented a new and useful Improvement inLawn-Sprinklers, of which the following. is a full description,reference being had to the accompanying drawings, in which- Figure l isan elevation. Fig. 2 is a central vertical section. Figs. 3, 4, 5, 6 areviews of the parts separated.

It is customary to make lawn-sprinklers having revolving arms 5 but thehead or cap,

when used, has been stationary.

Our invention consists in so constructing the sprinkler that theperforated head or cap will revolve as well as the arms.

In the drawings, A represents a plug. It is provided with a screw-threadat the lower end, and is adapted to be attached thereby to a water-pipe.B are arms perforated at or near their outer ends, as usual. They arehollow, and are suitably secured in or to the body C, which ts over androtates upon the plug A, the lower end of C resting on a shoulder on theplug. The body C is provided with a chamber, c, surrounding the plug,which is provided with a suitable number of openings, b, through whichwater iiows into the chamber c. The body C is held in place by means ofa screw, d, which enters the plug A. We arrange these parts so that thehead of the screw does not come in close contact with the top of thebody C, thus leaving it more free to revolve. Thereis a water-passage,e, through the screw d. D is a hollow head or cap, having, as shown, aneck, f, provided with a screw-thread, by means of which it is securedto the upper end of the body C, as shown in Fig. 2. This head D isprovided with a suitable number of small perforations, g, and it is infact a sprinkling-rose.

In use water is supplied' to the arms B through the plug A and chamber cin C. At the same time water will be supplied to the head D through saidplug A, and the passage e through the screw d, and the head D beingconnected with the body C, it will. revolve with the body C and arms B,distributing the jets of water from the head in concentric circles moreevenly and over greater space than when the head remains stationary.

The arms and body are made to revolve, in the usual manner, by theaction of the jets of water from the arms.

The joint between the head and body can be water-tight, so that with ourconstruction there is but one joint through which water can waste. Allother lawn-sprinklers having arms and a head have two or more jointsthrough which water wastes, so as to materially interfere with the bestoperation of the device.

The screw d may be dispensed with, and other suitable devices may beused for holding the body C in place on the plug. For example, the upperend of the plug might project up into the head D, and be provided with ascrewthread upon the outside to receive a nut, which might rest onashoulder, the nut being large enough to extend over the top of the bodyC.

In such case there must be an opening through the plug to allow water topass into the head.

What we claim as new, and desire to secure by Letters Patent, is asfollows:

In a lawn-sprinkler, the combination of the plug A, revolving body andhead C l), and p hollow screw, all constructed and operatingsubstantially as and for the purposes set forth.

LUDWIG WOLFF. HENRY STEIN.

Witnesses:

A. P. MiinDocK, MAX EBERIIARDT.

